Form for molding concrete walls



March 24, 1953 W. R HUNTINGTON FORM FOR MOL DING CONCRETE WALLS 2 SHEETS--SHEET 1 Filed April 15, 1949 n 7 m 2D; 0 2 n 2 l 3 f 27 2 H I U 92 22 H 3 Z l F 2 wk w. .m 2 W U W 6 3 an v 5 mm 3 2 K K u X 2 2% 2 3 2 2 2 2 \H 2 2 2 2 2 M "a a a y a a M a 2 mu m n. m fl m 72 m 7W. 0 7mm W 2 2 2 2 2 2 F March 24, 1953 w. R. HUNTINGTON 2,632,228

FORM FOR MOLDING CONCRETE WALLS Filed April 13, 1949 2 SHEETS-SHEET? Fly. la. m

Patented Mar. 24, 1953 UETED ST "r r FFICE 5 Claims.

My invention relates to forms into which concrete is poured and its principal objectives are to save time, labor, and material.

Today the construction industry is being priced out of a lot of business because of the high cost of labor and materials, especially lumber and plywood. The labor situation is now such that it is cheaper to use plywood although it costs several times the price of the usual form lumber. It is evident that this high priced plywood must be handled with kid gloves, so to speak, in order to prolong its useful life. In other words, it cannot be damaged by bolt holes, nail holes, scarring, notching, and what not. One cannot afford: to expend much time or money to prepare it for use, to use it, to salvage it or to repair it; to band it or to bolt, screw, or nail it to frames or to studs; to build up pre-fab forms to meet special conditions; to be limited to the use of one particular type of tie and spacer for they may not be obtainable when needed.

To meet these many disadvantages that I run into constantly in my work as a construction superintendent I have devised the form which I shall describe.

In my form I can use shiplap panels or plywood; set up a form of plywood without nails, screws, or bolts; set up the plywood, studs, and strongbacks, of a plain wall, without driving a nail; use random lengths of strongback material; use most of the commercial ties on the market; use ties of different types; and incorporate standard form construction of 2. x 4s and shiplap with my form to meet special conditions.

How I accomplish the above is illustrated in the accompanying drawings.

Fig. 1 is a plan view of a form assembly; Fig. 2 is a side elevation of the stud; Fig. 3 is a rear elevation; Fig. e is an enlarged side elevation of a portion of Fig. 2; Fig. 5 is an enlarged front elevation of Fig. 4; Fig. 6 is a plan view partly in section to show the panels held in place by the form spacer; Fig. 7 is a portion of Fig. 3, enlarged; Fig. 8 is a plan view of a form tie provided with disk spacers; Fig. 9 is a plan view of a form tie provided with tapered wood plug form spacers; Fig. 10 is a plan view of a form tie provided with U-shaped ends; Fig. 11 is a side elevation of the strongback bracket with brace pockets.

Thruout the drawings and the specification similar numerals refer to similar parts.

To start out with I make my sheathing member 1 (preferably of plywood) 32" x 48". Thisis not an arbitrary size but it is convenient size for one man to handle and it i obtainable cut to that size or three pieces of that size may 2 be out from a standard commercial 4' x 8 sheet of plywood. I find it advisable to spray on a coat of one of the many preparations on the market for sealing the panel against moisture and for protecting its surface.

I prefer to make my studs 2 from aluminum, magnesium, or one of their alloys in order to obtain a stud of light weight, for one of the objectives of my construction is to provide panels, studs, strongbacks, and braces that one man may handle and put in place. In addition to being light in weight the above materials permit my stud to be formed by the extrusion process with a satisfactory finish.

By making the stud 2 by the extrusion process the rib 3 on the stud web 4 may be made integral therewith instead of by attachment.

The studs 2 are of channel section and preferably 8 in length. At 16" spacings I drill holes 5 thru the stud flanges 6 for the rivets I, preferably with countersunk heads, which pass thru the flanges 8 of the standard portion 9 of the strongback bracket it to hold said bracket in the desired position on the stud 2. It is evident that on an 8' stud six brackets in will be secured.

In the web l of the channel stud 2 I form a horizontally elongated hole H which is wide by lcng and on the same centers I2 1 form a circular hole I 3 in said web and incidentally cut out a long section M- of the rib 3. These holes are clearly shown in Fig. 7. The ends of most types of commercial ties will pass thru these holes but not their form-spacing means.

When the strongback brackets I!) are riveted or bolted in place the hole !3 is in alignment with a hole l5 cored or drilled thru the base portion 16 of the bracket ill. The flanges 6 of the channel studs 2 are made slightly under 1%" wide. The base portion It of the bracket in extends at right angles to the bracket standard portion 9 thereof which is of channel section with the flanges 8 thereof in intimate contacting relation with the inside of the stud flanges 6 and web 6. The face It of the web iii of the standard portion 9 of the bracket it is formed to provide a distance of 1% (standard 2 x 4 thickness) between said face l8 and the web face 2t of the channel stud 2.

Extending upwardly at right angles to the base portion iii of the bracket H3 is the ear 2! whose height is made approximately 4 or less than the thickness of three 2 x 4 strongbacks laid flatwise. The face 22 of the ear 2! is spaced 3 from the web face [8 of the standard portion 9. The dimensions given are important with forms using 2 x 4s surfaced t0 1%" x 3%" as will be noted farther on.

It is evident that the bracket channel portion 9 could be made to straddle the channel stud 2 instead of being straddled by said stud. The objection to this first construction is that the studs do not stack up well. The preferred construction reduces to a minimum the projections that might catch on adjacent studs when a stud is being pulled from a pile.

The standard portion 9 f the brackets H) extends below as well as above the base portion I6 which is braced therefrom by the web 23 provided with a hole 24 for the reception of the bolt 25 which passes thru said Web 23 and the ears 28 of the brace pocket 2'1 formed to receive the end 28 of a brace 29. The brace end 28 i clamped in the pocket 2'! by a wing bolt 30 threaded in the side wall 21A of the pocket 2! and adapted to be crowded against the wooden brace end 28. The brace pocket 21 being hingedly secured to the web 23 may be adjusted to any desired angle for the brace.

plywood is generally used for form work so for that thickness I make the rib 3 on the stud 2 to a width of and to project 1%" from the face 20 of the stud web 4. This is to permit the spacer means 3|, on the wall or form tie 32 used, to bear against the plywood panels I. This is clearly shown in Fig. 6.

Many of the wall ties on the market are formed of a length of wire or rod upon which are mounted two spacer means 3| held apart for the desired thickness of wall. The means to hold them apart the desired distance are usually projections on the wire or rod formed by swaging. Three types of present day commercial wall ties are illustrated in Figs. 8, 9, and 10. In Fig. 6, the spacer means 3! is a hollow semi-hemispherical cap. In Fig. 8, the wall spacer means 3i consists of a circular disk and in Fig. 9, it is a tapered wood plug. These spacer means are formed and positioned to permit their easy removal from the concrete when the forms are stripped therefrom. The wall ties 32 shown in Figs. 6, 8, and 9, are formed with or provided with a disk or button 33 on each end thereof, while the wall tie 32 shown in Fig. 10, has its ends returned to form a U-shaped portion slightly less than A wide. Any of these tie ends 33 can be passed thru the combined slotted hole l--l3 in the web 4 and the hole (5 in the strongback bracket base portion i6 while the spacer means 3! cannot.

When in position the tie ends 33 extend just far enough beyond the base portion end SA to permit a wedge-shaped device designated by the numeral 34 to be driven between the tie end 33 and the bracket end ISA to cause the spacer means 3! to be brought tightly against the form panels l to hold opposite form panels the desired distance apart.

In erecting a wall the studs 2 are automatically spaced about 32 on centers by the 32 wide panels which abut the rib 3 on the studs 2 when in position. So to start a wall I set up a pair of opposed studs 2, set up a panel I against each, insert a tie 32 and tighten it. Another pair of the studs 2 are set up to support the opposite end of the panels I, a tie 32 inserted and tightened. This is followed by a second pair of panels I and a third pair of studs 2. Now having three pair of studs erected the strongbacks ll are placed in position in the brackets It] provided for them. Since these wood strongbacks I! are 3%" wide and the space provided for them is 3 it is apparent that the wood strongbacks will be indented as the strongbacks are driven into place.

It is to be noted that the standard face 18 is broad in comparison to the narrow face 22 of the ear 2| hence it is evident that the indentation 35 will be on the ear side of the strongback. As a consequence there will still remain a space of 1%" between the face E8 of the standard portion 9 and the panel I or the stud web face 20 against which the panel I bears. This 1%" space provides for the positioning of a Wood stud 3'! midway between the channel studs 2. It follows that this wood stud 31 is supported by the strongbacks l7 and in turn supports the panel Any number of these wood studs 3! may be positioned between the channel studs 2 to meet any contingency.

After the lower panels I and strongbacks I! are in place the top course of panels 1 and strongbacks i? are put in place and clamped together by their tie members 32. After having two bents of panels in place the setting up of both courses may proceed together. The placing of the second course of strongbacks follows the first and the third follows the second, joints being broken between course members. From a perusal of Figs. 6 and '7, it will be noted that the panels cover up the slotted hole |ll3 in the web 4 and the spacer member 3! covers the section [4 removed from the rib 3. Since the tie wire passes between adjacent panels l and the spacer members 3| clamp the panels 4 against the stud 2 it is evident that no holes are required in the panels for the tie wires 32 and no nails, screws, or bolts. are required to be driven into the panel 5 to hold it in place or for any other purpose. The brackets i0 position and clamp the strongbacks H to function and to support the wall form without the use of nails. When a wall is to be stripped the strongbacks ll are pried out of the brackets l8 and the tie wire 32 broken off in the usual manner for the particular type of tie employed. When this is done the studs 2 and the studs 37 are free as are the panels I and all may be removed without damage.

Fig. 2, by broken line, shows how long studs 31 may be placed to extend above the 8' studs 2 to form a wall 10 high for instance. The upper wall extension 38 is readily completed with standard construction for it is already aligned by the lower portion set up with the channel studs 2.

I usually start a form close to the corner of intersecting walls as 39 and 4d and finish out the corner 4! with wood studs 31 allowing the strongbacks IT to extend in the manner usual to standard construction which is well known to all those skilled in the art. Fig. l carries sufficient suggestion without detailed description to these men.

While it has been pointed out that certain dimensions are desirable to meet certain conditions it is evident that other combinations are possible and that other changes in appearance and detail may be made without departing from the basic idea behind my invention. I therefore do not limit myself but claim all that comes fairly within the scope of the appended claims.

I claim:

1. A form for concrete including sections of sheathing panel metal studs having a surface against which the sheathing panels bear and a longitudinal rib to separate adjacent panels, wood studs positioned between the metal studs, strongbacks, a plurality of brackets mounted on the metal studs for the reception of the strongbacks having a broad strongback bearing surface spaced from the panel surface the thickness of the d studs and a narrow bearing surface spaced from the strongback broad bearing surface a distance less than the strongback width, and form tie members positioned in alignment with the rib.

2. In a concrete form a stud of channel section; a strongback supporting bracket having a standard of channel section formed for telescopic engagement with the stud, a base, and a web between the base and the standard; a pocket hingedly connected to the web formed to receive the end of a brace within said pocket; and means to clamp it therein.

3. In a form for concrete the combination of a pair of spaced apart sheathing panels, a plurality of form ties, and a panel supporting means comprising a metal stud of channel section having spaced longitudinal rib portions projecting from the channel Web on one side and extending between said sheathing panels and web stiffening flanges extending from the opposite side thereof, said web having apertures positioned between the rib portions for the passage of the ends of the form ties therethru, said form ties having spaced means thereon formed to span the rib portions and engage the sheathing panels to hold them against the web portion of the stud.

l. In a form for concrete the combination of a pair of spaced apart sheathing panels, a plurality of form ties, a panel supporting means comprising a metal stud of channel section having spaced longitudinal rib portions projecting from the channel web on one side and extending between said sheathing panels and Web stiffening flanges projecting from the opposite side thereof, a plurality of strongback supporting brackets detachably mounted on said stiffening flanges, and 3 means to anchor the form tie ends, said channel Web having apertures positioned between the rib portions and in alignment with apertures in the strongback brackets for the passage therethru of said form tie ends, said form tie ends having form spacing means thereon formed to span the rib portions and engage the sheathing panels to hold them against the web portion of the stud.

5. In a form for concrete the combination of a pair of sheathing panels, a channel stud having web portions to support said panels, a rib to space the panels apart, and flanges to stiffen said web, strongback brackets secured to the channel flanges, means to clamp the panels against the channel web with no portion of said means passing thru either panel but thru opposite brackets on opposite studs, and take-up means to anchor those portions of the clamping means extended thru the brackets, said strongback brackets comprising a base, a wide face upstanding ear, and a narrow face upstanding ear spaced from the other formed to indenta strongback forced between the ears, said ears being of a height to receive at least three strongbacks in stacked relation.

WILLIAM R. HUNTINGTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 676,785 Toelpe June 18, 1901 1,313,393 Larzelere Aug. 19, 1919 2,217,278 Kanter Oct. 8, 1940 2,312,983 Summers Mar. 2, 1943 2,370,174 Kinninger Feb. 27, 1945 

